Headers

[biggraypig]

What are the best through the hull headers for a 454 chevy? Where would I get a pair? If someone has some that they are not useing, and willing to let them go, I would be interested.
bigggraypig@frontiernet.net
Thanks

[Duane HTP]

Are you looking for headers for a covered or non-covered engine?

[biggraypig]

Covered. How much of a perfomance gain could I expect? Is it worth the cost?
Thanks again

[jetboatperformance]

Covered. How much of a perfomance gain could I expect? Is it worth the cost?
Thanks again
Depending on what you have already, with Improved Intake and Carb (vs stock) you can look for 10 to 15% (conservatively) You will need to make some "tuneing changes" when you switch to headers Tom
BTW if the boat in your avatar is the boat you intend to modify ,it looks like your engine is covered , only water jacketed headers can be used in that application due to the heat and fire danger concerns Tom http://i147.photobucket.com/albums/r319/jetboatperformance/action-smiley-0691.gif

[biggraypig]

Indmar 454 chevy. I belive it to be a stock marine application. I have a set of oval port 049 heads that I am porting and polishing, and an edelbrock air gap intake that will be going on before spring. What would be a good cam for this application?
I am also putting on a droop snoot, and a berkeley SE loader scoop. Will this modification help any?
20.5 carrera elite.

[TIMINATOR]

I can help with your cam/boat questions. I am the "Jet-tech" writer for Hot Boat, and I own TUF-ENUF MARINE PERF. too. Call during business hrs. 623-877-8553 TIMM

[TIMINATOR]

P.S. I also have a set of used Lightning headers for sale, and we are a dealer for them too. TIMINATOR

[ck7684]

Jacketed? I'm looking for some TT headers also...

[TIMINATOR]

Lightnings are Stainless and jacketed. TIMINATOR

[ck7684]

I'm interested in these...PM sent